WORST_CASE(Omega(1),?) ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: l5 0: l0 -> l1 : Result_4^0'=Result_4^post_1, x_5^0'=x_5^post_1, [ 0<=-1+x_5^0 && x_5^post_1==-1+x_5^0 && Result_4^0==Result_4^post_1 ], cost: 1 2: l0 -> l2 : Result_4^0'=Result_4^post_3, x_5^0'=x_5^post_3, [ x_5^0<=0 && Result_4^1_1==Result_4^1_1 && Result_4^post_3==Result_4^post_3 && x_5^0==x_5^post_3 ], cost: 1 1: l1 -> l0 : Result_4^0'=Result_4^post_2, x_5^0'=x_5^post_2, [ Result_4^0==Result_4^post_2 && x_5^0==x_5^post_2 ], cost: 1 3: l3 -> l0 : Result_4^0'=Result_4^post_4, x_5^0'=x_5^post_4, [ 0<=-1+x_5^0 && x_5^post_4==-1+x_5^0 && Result_4^0==Result_4^post_4 ], cost: 1 4: l3 -> l2 : Result_4^0'=Result_4^post_5, x_5^0'=x_5^post_5, [ x_5^0<=0 && Result_4^1_2==Result_4^1_2 && Result_4^post_5==Result_4^post_5 && x_5^0==x_5^post_5 ], cost: 1 5: l4 -> l3 : Result_4^0'=Result_4^post_6, x_5^0'=x_5^post_6, [ Result_4^0==Result_4^post_6 && x_5^0==x_5^post_6 ], cost: 1 6: l5 -> l4 : Result_4^0'=Result_4^post_7, x_5^0'=x_5^post_7, [ Result_4^0==Result_4^post_7 && x_5^0==x_5^post_7 ], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 6: l5 -> l4 : Result_4^0'=Result_4^post_7, x_5^0'=x_5^post_7, [ Result_4^0==Result_4^post_7 && x_5^0==x_5^post_7 ], cost: 1 Removed unreachable and leaf rules: Start location: l5 0: l0 -> l1 : Result_4^0'=Result_4^post_1, x_5^0'=x_5^post_1, [ 0<=-1+x_5^0 && x_5^post_1==-1+x_5^0 && Result_4^0==Result_4^post_1 ], cost: 1 1: l1 -> l0 : Result_4^0'=Result_4^post_2, x_5^0'=x_5^post_2, [ Result_4^0==Result_4^post_2 && x_5^0==x_5^post_2 ], cost: 1 3: l3 -> l0 : Result_4^0'=Result_4^post_4, x_5^0'=x_5^post_4, [ 0<=-1+x_5^0 && x_5^post_4==-1+x_5^0 && Result_4^0==Result_4^post_4 ], cost: 1 5: l4 -> l3 : Result_4^0'=Result_4^post_6, x_5^0'=x_5^post_6, [ Result_4^0==Result_4^post_6 && x_5^0==x_5^post_6 ], cost: 1 6: l5 -> l4 : Result_4^0'=Result_4^post_7, x_5^0'=x_5^post_7, [ Result_4^0==Result_4^post_7 && x_5^0==x_5^post_7 ], cost: 1 Simplified all rules, resulting in: Start location: l5 0: l0 -> l1 : x_5^0'=-1+x_5^0, [ 0<=-1+x_5^0 ], cost: 1 1: l1 -> l0 : [], cost: 1 3: l3 -> l0 : x_5^0'=-1+x_5^0, [ 0<=-1+x_5^0 ], cost: 1 5: l4 -> l3 : [], cost: 1 6: l5 -> l4 : [], cost: 1 ### Simplification by acceleration and chaining ### Eliminated locations (on linear paths): Start location: l5 9: l0 -> l0 : x_5^0'=-1+x_5^0, [ 0<=-1+x_5^0 ], cost: 2 8: l5 -> l0 : x_5^0'=-1+x_5^0, [ 0<=-1+x_5^0 ], cost: 3 Accelerating simple loops of location 0. Accelerating the following rules: 9: l0 -> l0 : x_5^0'=-1+x_5^0, [ 0<=-1+x_5^0 ], cost: 2 Accelerated rule 9 with backward acceleration, yielding the new rule 10. [accelerate] Nesting with 1 inner and 1 outer candidates Removing the simple loops: 9. Accelerated all simple loops using metering functions (where possible): Start location: l5 10: l0 -> l0 : x_5^0'=0, [ x_5^0>=0 ], cost: 2*x_5^0 8: l5 -> l0 : x_5^0'=-1+x_5^0, [ 0<=-1+x_5^0 ], cost: 3 Chained accelerated rules (with incoming rules): Start location: l5 8: l5 -> l0 : x_5^0'=-1+x_5^0, [ 0<=-1+x_5^0 ], cost: 3 11: l5 -> l0 : x_5^0'=0, [ 0<=-1+x_5^0 ], cost: 1+2*x_5^0 Removed unreachable locations (and leaf rules with constant cost): Start location: l5 11: l5 -> l0 : x_5^0'=0, [ 0<=-1+x_5^0 ], cost: 1+2*x_5^0 ### Computing asymptotic complexity ### Fully simplified ITS problem Start location: l5 11: l5 -> l0 : x_5^0'=0, [ 0<=-1+x_5^0 ], cost: 1+2*x_5^0 Computing asymptotic complexity for rule 11 Resulting cost 0 has complexity: Unknown Obtained the following overall complexity (w.r.t. the length of the input n): Complexity: Constant Cpx degree: 0 Solved cost: 1 Rule cost: 1 Rule guard: [ Result_4^0==Result_4^post_7 && x_5^0==x_5^post_7 ] WORST_CASE(Omega(1),?)